package src.itheima.com;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Enumeration;

public class ServletConfigDem01 extends HttpServlet {
    private ServletConfig config;

    @Override
    public void init(ServletConfig config) throws ServletException {
        this.config = config;
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String vlaue = config.getInitParameter("encoding");
        System.out.println(vlaue);
        Enumeration<String> keys = config.getInitParameterNames();
        while (keys.hasMoreElements()) {
            String key = keys.nextElement();
            String values = config.getInitParameter(key);
            System.out.println(key + ".." + values);
        }
        String servletName = config.getServletName();
        System.out.println(servletName);
        ServletContext servletContext = config.getServletContext();
        System.out.println(servletContext);
        Object username = servletContext.getAttribute("username");
        System.out.println(username);


    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
